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An electric iron of 1100 W is operated for 2 hours daily. What will be the electrical consumption expenses for that in the month of April ? (The electric company charges Rs. 5 per unit of energy.) |
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Answer» Time (t) = 2 hour To find:`""` Expense of using ELECTRIC iron in April month `"Formulae:i.Energy"="Power"xx"time"` `"II.Electrical consumption expenses "="Energy consumed "xx"charge per unit"` `"Calculation:From FORMULA (i),"` Energy consumed in one day `=1.1xx2=2.2kWh` `THEREFORE""` Energy consumed in the month of April (i.e. 30 days) will be, `"Energy "=2.2xx30=66kWh="66 unit..."(because "1 kWh = 1 unit")` From formula (ii), Electrical consumption expenses `=66xx5="Rs 330"` |
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